How to Set Focus on JTextField?

Question

I make my game run without mouse so using pointer is not a choice. High Score menu will show when player lose.

this is my code

    highScore=new MyTe         


        

Answer 1

If the page contains multiple item and like to set the tab sequence and focus I will suggest to use FocusTraversalPolicy.

grabFocus() will not work if you are using FocusTraversalPolicy.

Sample code

int focusNumber = 0;
Component[] focusList;
focusList = new Component[] { game, move, amount, saveButton,
            printButton, editButton, deleteButton, newButton,
            settingsButton };

frame.setFocusTraversalPolicy(new FocusTraversalPolicy() {

        @Override
        public Component getLastComponent(Container aContainer) {
            return focusList[focusList.length - 1];
        }

        @Override
        public Component getFirstComponent(Container aContainer) {
            return focusList[0];
        }

        @Override
        public Component getDefaultComponent(Container aContainer) {
            return focusList[1];
        }

        @Override
        public Component getComponentAfter(Container focusCycleRoot,
                Component aComponent) {
            focusNumber = (focusNumber + 1) % focusList.length;
            if (focusList[focusNumber].isEnabled() == false) {
                getComponentAfter(focusCycleRoot, focusList[focusNumber]);
            }
            return focusList[focusNumber];
        }

        @Override
        public Component getComponentBefore(Container focusCycleRoot,
                Component aComponent) {
            focusNumber = (focusList.length + focusNumber - 1)
                    % focusList.length;
            if (focusList[focusNumber].isEnabled() == false) {
                getComponentBefore(focusCycleRoot, focusList[focusNumber]);
            }
            return focusList[focusNumber];
        }
    });